Table 2.

Generalized estimating equation (GEE) analysis of the postoperative sore throat and different time points.

Variables	β-Estimate	SE	95% CI	p value
Intercept	0.668	0.1331	0.408–0.929	0.990
Group K	−0.558	0.1529	−0.858–0.258	<0.001
Group D	0a
T1	2.432	0.2115	2.017–2.846	<0.001
T2	1.449	0.1625	1.131–1.768	<0.001
T3	1.021	0.1321	0.762–1.280	<0.001
T4	0a

  ^aParameter that statistically represents zero.

Group K was treated with 5% ketorolac tromethamine spray; group D was treated with distilled water spray. T1: postoperative 1 h; T2: postoperative 3 h; T3: postoperative 6 h; T4: postoperative 24 h.